Github user albertshau commented on a diff in the pull request:
https://github.com/apache/twill/pull/21#discussion_r95050605
--- Diff:
twill-yarn/src/main/java/org/apache/twill/yarn/YarnTwillRunnerService.java ---
@@ -277,9 +281,16 @@ public TwillPreparer prepare(TwillApplication
application) {
Preconditions.checkState(serviceDelegate.isRunning(), "Service not
start. Please call start() first.");
final TwillSpecification twillSpec = application.configure();
final String appName = twillSpec.getName();
+ RunId runId = RunIds.generate();
+ Location appLocation = locationFactory.create(String.format("/%s/%s",
twillSpec.getName(), runId.getId()));
+ LocationCache locationCache = this.locationCache;
+ if (locationCache == null) {
+ locationCache = new NoCachingLocationCache(appLocation);
--- End diff --
nit: extra space
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